Assemblymember Bill Quirk Share: Government Assemblymember Bill Quirk Visit Website 22320 Foothill Blvd., Ste. 540 Hayward, CA 94541 (510) 583-8818 (510) 583-8800 (fax) https://a20.asmdc.org/ Facebook Hours: Monday - Friday 9:00 AM - 5:00 PM About Map About Assemblymember Bill Quirk represents the 20th Assembly District. Directions Located in the City Center Building off of Foothill Blvd. in Hayward. What's Nearby? Distance: 5 10 15 20 25 50 mi.